import java.io.*;
import java.util.*;

/**
 * @Author: wenjingyuan
 * @Date: 2023/03/24/15:20
 * @Description:
 */
public class KWIC2 {

    private ArrayList<String> kwicList=new ArrayList<String>();
    private  ArrayList<String> lineTxt=new ArrayList<String>();
    private BufferedReader inputFile;
    private BufferedWriter outputFile;
    public static void main(String[] args) {

        KWIC2 kwic2=new KWIC2();
        kwic2.input("D:\\test.txt");
        kwic2.shift();
        kwic2.alphabetizer();
        kwic2.output("D:\\test1.txt");

    }


    public  void input(String fileName) {
        try {
            inputFile = new BufferedReader(new FileReader(fileName));
        } catch (Exception e) {
            System.err.print("wrong");
            System.exit(1);
        }
        String line;
        try {
            while ((line = inputFile.readLine()) != null) {
                lineTxt.add(line);
            }
        } catch (IOException e) {
// TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    public void output(String fileName) {
        Iterator<String> it = kwicList.iterator();
        try {
            outputFile = new BufferedWriter(new FileWriter(fileName));
            while (it.hasNext()) {
                outputFile.write(it.next() + "\n");
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (outputFile != null) {
                    outputFile.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    public  void shift(){
//获取每个单词，存入tokens
        Iterator<String> it=lineTxt.iterator();
        while(it.hasNext()){
            StringTokenizer token=new StringTokenizer(it.next());
            ArrayList<String>tokens=new ArrayList<String>();
            int i=0;
//循环添加单词

            int count=token.countTokens();
            while(i<count){
//System.out .println(token.nextToken().toString());
                tokens.add(token.nextToken());
                i++;
            }

//display(tokens);
//切割各个单词，不断改变起始值和利用loop实现位移。
            for(i=0;i<count;i++){
                StringBuffer lineBuffer=new StringBuffer();
                int index=i;
                for(int f=0;f<count;f++){

//从头继续位移
                    if(index>=count)
                        index=0;
//存入StringBuffer
                    lineBuffer.append(tokens.get(index));
                    lineBuffer.append(" ");
                    index++;
                }
                String tmp=lineBuffer.toString();
//System.out .println("the buffer is "+tmp);
                kwicList.add(tmp);

            }

        }

    }


    public  void alphabetizer(){
        Collections.sort(this.kwicList,new AlphabetizerComparator());
    }
    private class AlphabetizerComparator implements Comparator<String> {
        @Override
        public int compare(String o1,String o2){
            if(o1==null&&o2==null){
                throw new NullPointerException();
            }
            int compareValue=0;
            char o1c=o1.charAt(0);
            char o2c=o2.charAt(0);
            compareValue=o1c-o2c;
            return compareValue;

        }

    }
}
